login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A049259 Smallest nonnegative value taken on by 20x^2 - ny^2 for an infinite number of integer pairs (x, y). 0
4, 2, 5, 4, 0, 14, 5, 8, 11, 10, 4, 8, 7, 6, 5, 4, 3, 2, 1, 0, 20, 20, 5, 20, 20, 6, 5, 20, 20, 20, 4, 20, 3, 14, 5, 20, 20, 20, 5, 20, 4, 12, 5, 4, 0, 20, 5, 20, 19, 20, 5, 20, 3, 14, 5, 20, 20, 20, 1, 20, 4, 2, 17, 16, 15, 14, 5, 12, 11, 10, 4, 8, 7, 6, 5, 4, 3, 2, 1, 0, 20, 20, 5, 20, 20 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..85.

CROSSREFS

Sequence in context: A165275 A163363 A065258 * A010647 A021239 A112963

Adjacent sequences:  A049256 A049257 A049258 * A049260 A049261 A049262

KEYWORD

nonn

AUTHOR

David W. Wilson

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified February 17 10:59 EST 2019. Contains 320219 sequences. (Running on oeis4.)